abiogenesis....w/out parent organisms....meaning that there was a belief that organisms arose from decaying matter with out pre-existing parent cells

4.

redi- (1668)...experiment using maggots and flies to prove that they did not generate just from decaying meat

needham- (1745-1748)...thought he demonstrated spontaneous generation when he saw microbes growing in both broths that were boiled and sealed with corks.

Spallazani- variation of needhams broth by varying lengths of time boiled in flasks..sealing some leaving some open. Said boiling killed organisms while those open had growth from organisms in the air, disputing any idea of spontaneous generation.

Pasteur- silenced "vital life forces" critics when he made swan flasks left entirely open to air...no spontaneous generation for microbes trapped in neck of flasks.

5.

Germ theory of disease was described by Fracastoro as concept that contagions or germ were responsible for infection or disease and methods that they spread from person to person

6.

aka koch's procedures....
where specific microorganisms can be related to specific infectious disease.

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